<template>
  <div>
        <!-- 面包屑导航 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>参数列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区 -->
        <el-card>
            <el-alert show-icon title="注意：只允许为第三级分类设置相关参数！" type="warning" :closable="true"></el-alert>
            <!-- 选择商品分类 -->
            <el-row class="cat_opt">
                <el-col>
                    <span>选择商品分类：</span>
                    <!-- 商品分类级联框 -->
                    <el-cascader expandTrigger="hover" :options="cateList" :props="cateProps" v-model="selectCateKeys" @change="handleChange"></el-cascader>
                        
                </el-col>
            </el-row>
            <!-- tab页签区域 -->
              <el-tabs v-model="activeName" @tab-click="handleTabClick">
                <el-tab-pane label="动态参数" name="many">
                    <el-button type="primary" :disabled="isBtnDisabled" size="mini" @click="addDialogVisible=true">添加参数</el-button>
                    <!-- 动态表格 -->
                    <el-table :data="manyTableDate" border stripe>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                    
                          <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
                          <el-input v-model="scope.row.inputValue" v-if="scope.row.inputVisible" ref="saveTagInput" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)"  class="buttnewtag"></el-input>
                          <el-button type="primary" v-else @click="showInput(scope.row)" size="small">+New Tag</el-button>
                      </template>  
                      
                        </el-table-column>
                        <el-table-column type="index"></el-table-column>
                        <el-table-column label="参数名称" prop="attr_name"></el-table-column>
                        <el-table-column label="操作">
                            <template v-slot:default="scope">
                                <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                                <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeParams(scope.row.attr_id)">删除</el-button>
                            </template>
                        </el-table-column>
                           
                        
                    </el-table>
  
                      
                </el-tab-pane>
                <el-tab-pane label="静态属性" name="only">
                    <el-button type="primary" :disabled="isBtnDisabled" size="mini" @click="addDialogVisible=true">添加属性</el-button>
                    <!-- 静态表格 -->
                          <el-table :data="onlyTableData" border stripe>
                             <el-table-column type="expand">
                            <template slot-scope="scope">
                    
                          <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
                          <el-input v-model="scope.row.inputValue" v-if="scope.row.inputVisible" ref="saveTagInput" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)"  class="buttnewtag"></el-input>
                          <el-button type="primary" v-else @click="showInput(scope.row)" size="small">+New Tag</el-button>
                      </template>  
                      
                        </el-table-column>
                        <el-table-column type="index">

                        </el-table-column>
                        <el-table-column label="参数属性" prop="attr_name"></el-table-column>
                        <el-table-column label="操作">
                            <template v-slot:default="scope">
                                <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                                <el-button type="danger" size="mini" icon="el-icon-delete" @click=" removeParams(scope.row.attr_id)" >删除</el-button>
                            </template>
                        </el-table-column>
                           
                        
                    </el-table>
                </el-tab-pane>
             </el-tabs>
        </el-card>

        <el-dialog
            :title="'添加'+ titleText"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed"
            >
           <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
                <el-form-item :label="titleText" prop="attr_name">
                    <el-input v-model="addForm.attr_name"></el-input>
                </el-form-item>
           </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addParams">确 定</el-button>
            </span>
        </el-dialog>


<!-- 修改对话框 -->

        <el-dialog
            :title="'修改'+ titleText"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed"
            >
           <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
                <el-form-item :label="titleText" prop="attr_name">
                    <el-input v-model="editForm.attr_name"></el-input>
                </el-form-item>
           </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editParams">确 定</el-button>
            </span>
        </el-dialog>
  </div>
</template>

<script>
export default {
  
    data() {
        return {
            cateList:[],
            cateProps:{
                 value:'cat_id',
                 label:"cat_name",
                 children:'children'
            },
            selectCateKeys:[],
            activeName:'many',
            manyTableDate:[],
            onlyTableData:[],
            addDialogVisible:false,
            addForm:{
                 attr_name:''
            },
            addFormRules:{
                attr_name:[
                   { required: true, message: '请输入参数名称', trigger: 'blur' },
                ]
            },
            editDialogVisible:false,
            editForm:{},
             editFormRules:{
                attr_name:[
                   { required: true, message: '请输入参数名称', trigger: 'blur' },
                ]
            },
      
        }
    },
    created() {
        this.getCateList()
    },
    methods: {
       
       async  getCateList(){
        const{data:res} = await this.$http.get('categories');
        if(res.meta.status !==200){
            return this.$message.error('获取商品数据失败')
        }
            this.cateList = res.data;
            // console.log(this.cateList);
            
        },
        handleChange(){
         this.getParamsList()
        },
        handleTabClick(){
            // console.log(this.activeName);
            this.getParamsList()
            
        },
        getParamsList(){
             
          if(this.selectCateKeys.length !==3){
              this.selectCateKeys=[];
              this.manyTableDate=[];
              this.onlyTableData=[]
              return
          }
          console.log(this.selectCateKeys);
            //   根据所选的三级分类获取对应的参数

            this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}})
            .then((res)=>{
                    
                res.data.data.forEach(item=>{
                    item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
                    item.inputVisible = false;
                    item.inputValue = ''
                })
                console.log(res.data.data);
                

            if(this.activeName=='many'){
                this.manyTableDate = res.data.data
            }else{
                this.onlyTableData = res.data.data
            
                
            }
            
            })
          .catch(()=>{
              this.$message.error('获取参数列表失败')
          })
        },
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        addParams(){
           this.$refs.addFormRef.validate(vaild=>{
               if(!vaild) return
               this.$http.post(`categories/${this.cateId}/attributes`,{
                   attr_name:this.addForm.attr_name,
                   attr_sel:this.activeName
               })
               .then((res)=>{
                   this.$message.success('添加参数成功')
                   this.addDialogVisible = false
                   this.getParamsList()
               })
               .catch(()=>{
                   this.$message.error('添加参数失败')
               })
           }) 
        },
        editParams(){
             this.$refs.editFormRef.validate(vaild=>{
                 if(!vaild) return
                 this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{attr_name:this.editForm.attr_name,attr_sel:this.activeName})
                 .then((res)=>{
                     this.$message.success('修改属性成功')
                     this.getParamsList()
                     this.editDialogVisible = false
                 })
                 .catch(()=>{
                     this.$message.error('修改失败')
                 })
             }) 
        },

     
     async removeParams(attr_id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该参数, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      // 用户取消了删除的操作
        if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除！')
        }

        // 删除的业务逻辑
        const { data: res } = await this.$http.delete(
            `categories/${this.cateId}/attributes/${attr_id}`
        )

        if (res.meta.status !== 200) {
            return this.$message.error('删除参数失败！')
        }

        this.$message.success('删除参数成功！')
        this.getParamsList()
        },


    async showEditDialog(id){
            
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${id}`,{params:{attr_sel:this.activeName}})
        
            if(res.meta.status!==200){
                return this.$message.error('获取列表参数失败')
            }
            this.editForm = res.data
            this.editDialogVisible = true
        
            this.editDialogVisible = true
    },
    editDialogClosed(){
        this.$refs.editFormRef.resetFields()
    },
    handleInputConfirm(row){
        if(row.inputValue.trim().length==0){
            row.inputValue = ''
            row.inputVisible= false
            return 
        }
          row.attr_vals.push(row.inputValue.trim())
            row.inputValue='';
            row.inputVisible=false
         this.saveAttrVals(row)
       
        },
    showInput(row){
        row.inputVisible = true

        //    $nextTick方法的作用就是当页面元素被重更新渲染到页面之后在执行韩素中的代码
        this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus();
        })
  
    },
    saveAttrVals(row){
       
        this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
            attr_name:row.attr_name,
            attr_sel:row.attr_sel,
            attr_vals:row.attr_vals.join(' ')
        }).then((res)=>{
                 this.$message.success('修改参数项成功')
        })
        .catch(()=>{
            this.$message.error('修改参数项失败')
        })
    },
    handleClose(i,row){
        row.attr_vals.splice(i,1)
        this.saveAttrVals(row)

    }

        },
     
    computed:{
    isBtnDisabled(){
        if(this.selectCateKeys.length !==3){
            return true
        }
        return false
    },
    cateId(){
        if(this.selectCateKeys.length===3){
            return this.selectCateKeys[2]
        }
        return null 
    },
    titleText(){
        if(this.activeName=='many'){
            return '动态参数'
        }
        return '静态属性'
    }
    
}
   
   
   }
  
   


</script>

<style lang="less">
.cat_opt{
    margin: 15px 0;
}
.el-cascader{
    width: 300px;
}
.el-tag{
    margin: 10px;
}
.buttnewtag{
    width: 200px !important
}
</style>